Roll for rolling-mills.



No. 678,666. Patented July 86, l90l. C. HUSER.

ROLL FOB ROLLING MILLS.

(Application filed Apr. 2, 1900.)

'(No Model.)

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llnrrsn Smarts Farmer (llhl lfihlt CASPAR HI ISER, OF BRUCKHAUSEN, GERMANY.

ROLL FOR ROLLlNG=ILLS.

SPECIFIGATIQN forming part of Letters Patent No. 678,666, dated July 16, 1901., Application filed April 2, 1900. Berlal No. 11,201. (No model.)

T0 on whom it "may concern:

Be it known that I, CASPAR HijsER, engineer, a subject of the King of Prussia, Emperor of Germany, residing at Bruckhausen, Prussia, Germany, have invented certain new and useful Improvements in Rollers for Rolling-Mills, of which the following is a specification.

By rolling long iron or steel rods or plates the rollers are heated to a high degree, and in consequence thereof they are worn out more rapidly and become less resistant, so that the rollers frequently burst. The cooling of the rollers by water from without, as has hitherto been the case, ofiers several drawbacks.

The present invention relates to hollow rollers which are cooled from the inside, while the weight of the rolling-train is reduced, as my new rollers are considerably lighter than the rollers hitherto in use.

According to my invention, a core consisting of a tube of rolled, welded, or cast steel having a considerably thin wall is arranged within the roll-body and welded with the latter. The core or the tube is cut to a suitable length and when in place within the roller projects at both ends outward, so that the projecting parts may be pressed at their extreme ends into the shape to fit couplingcrosses, and the rest of the parts may be employed as journals.

In order to make my invention more clear, the same is illustrated in the accompanying drawings, in which similar letters denote si1nilar parts.

Figure 1 shows a vertical section through an improved roller. Fig. 2 is a cross-section through line as y of Fig. 1.

In the drawings, a is the core or the tube upon which the roll-body b is welded. The welding is carried out after the core has been introduced in a hot condition into the casting-mold of the roll-bodies and the liquid metal is cast around in the mold-4. 6., it is passed through until the circumference of the core becomes liquid. When this is attained, the mold is entirely filled up, so that the roll-body becomes welded with the core. Instead of introducing the core a in a hot condition into the mold it may be heated also in the mold from the inside in a suitable manner-as, for instance, by means of combustibles placed in the core or by combustt ble gases and air passing through-so that the core is heated to white heat. After the roll-body has been welded upon the core the extreme ends 0' of the latter are suitably pressed so as to fit coupling-crosses. The part between this pressed end and the rollbody serves as a journal or as the bearing art.

p The main feature of my invention is that the tubes or cores employed can be cut from ordinary steel tubes to a certain length, and the same having a thin wall can easily be pressed at their ends into the shape suitable for coupling-crosses. Another advantage is that when the grooved roll-bodies are worn out they can be removed in the known manner and replaced by a new roll-body.

A particular advantage of these rollers is that the latter can be cooled from within and that the heat transmitted to the grooved rollbody can rapidly be turned off, so that wearing and bursting of the rollers are prevented. Tlie whole train of roll-bodies can be cooled by water flowing from a main water-pipe extending at one end into one of the hollow tubes.

In the case of plate-rollers the core a may be directly employed as the roll-body. In this case, of course, the tube or core has to be provided with walls having a correspond ingly greater thickness.

What I claim, and desire to secure by Let ters Patent, is

As a new article of manufacture, a roller for rolling-mills provided with a hollow steel core having a thin wall and upon which the body of the roller is welded, the ends of the core projecting beyond the body to formjournals and having their extremities formed into irregular shape by pressure, as set forth.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

OASPAI-t IIUSER. \Vitnesses:

WILLIAM Essnnwnm,

FRITZ TAKE. 

